The Enzyme Database

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Accepted name: limonene-1,2-epoxide hydrolase
Reaction: 1,2-epoxymenth-8-ene + H2O = menth-8-ene-1,2-diol
For diagram of limonene catabolism, click here
Glossary: limonene = a monoterpenoid
limonene-1,2-epoxide = 1,2-epoxymenth-8-ene
limonene-1,2-diol = menth-8-ene-1,2-diol
Other name(s): limonene oxide hydrolase
Systematic name: 1,2-epoxymenth-8-ene hydrolase
Comments: Involved in the monoterpene degradation pathway of the actinomycete Rhodococcus erythropolis. The enzyme hydrolyses several alicyclic and 1-methyl-substituted epoxides, such as 1-methylcyclohexene oxide, indene oxide and cyclohexene oxide. It differs from the previously described epoxide hydrolases [EC (trans-epoxysuccinate hydrolase), EC (leukotriene-A4 hydrolase), EC (hepoxilin-epoxide hydrolase), EC (microsomal epoxide hydrolase) and EC (soluble epoxide hydrolase)] as it is not inhibited by 2-bromo-4′-nitroacetophenone, diethyl dicarbonate, 4-fluorochalcone oxide or 1,10-phenanthroline. Both enantiomers of menth-8-ene-1,2-diol [i.e. (1R,2R,4S)-menth-8-ene-1,2-diol and (1S,2S,4R)-menth-8-ene-1,2-diol] are metabolized.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB, UM-BBD, CAS registry number: 216503-88-7
1.  van der Werf, M.J., Overkamp, K.M. and de Bont, J.A.M. Limonene-1,2-epoxide hydrolase from Rhodococcus erythropolis DCL14 belongs to a novel class of epoxide hydrolases. J. Bacteriol. 180 (1998) 5052–5057. [PMID: 9748436]
2.  Barbirato, F., Verdoes, J.C., de Bont, J.A.M. and van der Werf, M.J. The Rhodococcus erythropolis DCL14 limonene-1,2-epoxide hydrolase gene encodes an enzyme belonging to a novel class of epoxide hydrolases. FEBS Lett. 438 (1998) 293–296. [PMID: 9827564]
3.  van der Werf, M.J., Swarts, H.J. and de Bont, J.A. Rhodococcus erythropolis DCL14 contains a novel degradation pathway for limonene. Appl. Environ. Microbiol. 65 (1999) 2092–2102. [PMID: 10224006]
[EC created 2001]

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